Marybrook, WA

By Lauren McCaleb · Reviewed by Dylan Duncan · Updated 30 May 2026

46/100

Suburb Score

Around the national middle

Marybrook is more socio-economically advantaged than about 46% of the 14,462 Australian suburbs we score, based on the ABS SEIFA index (raw score 980, where about 1000 is the national average).

A socio-economic measure from ABS Census data — not a measure of how good a suburb is to live in or visit. How we calculate this.

Marybrook at a glance

Population (2021): 229
Median age: 48
Median weekly household income: $1,174
SEIFA score: 980
Coordinates: -33.6715, 115.2046

Marybrook demographics (2021 Census)

The figures below profile Marybrook using the Australian Bureau of Statistics 2021 Census; every percentage is a share of a clearly stated Census count, so each one traces back to the source. At a glance, the largest age group is mid-life (45–64) at 29%, 38% of homes are rented, and 18% of residents were born overseas.

Age profile

Age group	People	Share
Children (0–14)	35	16%
Youth (15–24)	20	9%
Young adults (25–44)	40	18%
Mid-life (45–64)	63	29%
Seniors (65+)	61	28%

Share of the 219 people counted by age.

Housing and households

Tenure	Dwellings	Share
Owned outright	43	45%
Owned with a mortgage	12	13%
Rented	36	38%

Dwelling type	Dwellings	Share
Houses	62	62%
Townhouses & semis	5	5%
Flats & apartments	0	0%

Tenure and dwelling shares are of the roughly 100 occupied private dwellings in Marybrook.

Median weekly rent: $300
Median monthly mortgage: $1,800
Average household size: 2.1 people
Median weekly family income: $1,875
Median weekly personal income: $662

Community and culture

Born overseas: 37 (18%)
Speaks a language other than English at home: 13 (6%)
Aboriginal and/or Torres Strait Islander: 8 (3%)

Work and education

Completed Year 12: 102 (55%)
Labour-force participation: 57.6%
Unemployment rate: 1.8%
Employed full-time: 55
Employed part-time: 46

Source: ABS Census of Population and Housing, 2021 (General Community Profile, by Suburb and Locality). © Australian Bureau of Statistics, released under CC BY 4.0. How we group bands and derive each share is set out on our methodology page.

Weather and climate in Marybrook

Based on 2014–2023 records, the warmest month in Marybrook is January (average daytime high around 28.5°C) and the coolest is August (around 16°C). The area receives roughly 548 mm of rain across the year.

Month	Avg high	Avg low	Rain
Jan	28.5°C	16.3°C	13 mm
Feb	28.1°C	16.6°C	15 mm
Mar	25.9°C	16.1°C	33 mm
Apr	22.1°C	13.8°C	34 mm
May	18.8°C	12°C	72 mm
Jun	16.7°C	10.9°C	83 mm
Jul	16°C	10.4°C	108 mm
Aug	16°C	9.6°C	83 mm
Sep	17.2°C	10.1°C	52 mm
Oct	19.3°C	11.3°C	32 mm
Nov	23.1°C	13°C	16 mm
Dec	26.5°C	14.8°C	7 mm

Climate normals, 2014–2023 (Open-Meteo, ERA5 reanalysis).

Common questions about Marybrook

Where is Marybrook?

Marybrook is a suburb of Western Australia, Australia.

What is the population of Marybrook?

At the 2021 Census, Marybrook had a population of about 229.

Is Marybrook an advantaged area?

Marybrook has an ABS SEIFA score of 980, where about 1000 is the national average — higher scores indicate greater relative socio-economic advantage. That gives it a Suburb Score of 46 out of 100 — more socio-economically advantaged than about 46% of Australian suburbs.

What is the weather like in Marybrook?

Marybrook has average daytime highs of about 21.5°C and overnight lows of about 12.9°C, with roughly 548 mm of rain across the year (based on 2014–2023 climate normals).